Potassium-Magnesium: Interrelationships in Cotton
AuthorsA. L. Page
F. T. Bingham
Authors AffiliationsA. L. Page is Assistant Professor, Department of Soils and Plant Nutrition, University of California, Riverside; F. T. Bingham is Associate Professor of Soil Science, Department of Soils and Plant Nutrition, University of California, Riverside.
Hilgardia 19(11):6-7. DOI:10.3733/ca.v019n11p6. November 1965.
recent field experiments have demonstrated that certain soils in the San Joaquin Valley need to be fertilized with heavy applications of potassium (K) o obtain maximum production. The question of what effect these high K additions have on the nutritional status of 3ther plant-essential elements for cotton has never been answered, but K-induced magnesium (Mg) deficiencies had been demonstrated for a number of crops by previous investigators. A greenhouse experiment to evaluate the effect of K on the Mg status of the cotton plant, under California conditions, was conducted at Riverside. Distinct K- and Mg-deficiency symptoms, along with the associated plant tissue analyses, were developed.
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